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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024

Webmaster:

    Kirt Blattenberger,

    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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Mechanical Units of Measure - Metric & English

Here is a collection of some of the most often used mechanical units. Both SI (metric) and SAE (English) units are given.

There are two fundamental types of units: base units and derived units. Base units include meter, foot, kilogram, second, etc. Derived units involve a combination of base units, such as square meter, kilometer/second, etc.

 

Name SI Base Unit Symbol English Base Unit Symbol
Length meter m foot ft
Area square meter m2 square foot ft2
Volume cubic meter m3 cubic foot ft3
Mass kilogram kg pound mass lb
Density kilogram/cubic meter kg/m3 pound/cubic foot lb/ft3
Time second s second s
Speed kilometer/second km/s foot/second ft/s
Force newton N pound-force lbf
Pressure pascal P pound/square foot lb/ft2
Plane Angle radian rad degree °
Solid Angle steradian ster square degree deg2
Momentum kilogram*meter/second ρ pound*foot/second ρ
Torque newton*meter t pound-force*foot t
Young's modulus pascal E pascal E
Kinetic energy joule K watt*second K
Potential energy joule U watt*second U

 

 

Here is the NIST document entitled The International System of Units (SI) –Conversion Factors for General Use

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